Shuttle control for shuttle changing looms



Sept. 15, 1936. R. e. TURNER SHUTTLE CONTROL FOR SHUTTLE CHANGING LOOMS Original Filed Sept. 15, 1933 FIG. 2

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nuenbor Richawd G. Turner Y M (lt'bor'rleqs Patented Sept. 15, 1936 UNITED STATES PATENT OFFICE] SHUTTLE CONTROL FOR SHUTTLE I CHANGING LOOMS Richard Greenleaf Turner, Worcester, Mass assetts Application September 13, 1939, Serial No. 689,209

Renewed April 17, 1936 8 Claims. (CL 139 -232) This is a continuation in part of a portion of V the disclosure in my prior co-pending application Serial No. 460,746. a In multicolor shuttle changing looms it isconvenient to arrange the stacks of reserve shuttles in one magazine with a common delivery throat or compartment through which the reserve shuttles of the different stacks move during or preparatory to the shuttle changing operation. In the form of invention set forth in the aforesaid application I show front and back cells or stacks with the common compartment located greater than its own height, and there is an' opportunity for it to rotate, in which case .it may reach the compartment on its side instead of the bottom.

In order to prevent this undesired rotation of the front reserve shuttles I provide means for advancing the bottom shuttle of the rear stack so that the front wall thereof will lie practically in the same plane as the rear' wall of the de-. scending front shuttle, mutual engagement of.

the shuttles preventing rotation. It is an im-, portant object of my present invention to provide means for locating the bottom shuttle of the rear stack so that it will accomplish this result.

When the rear cell is empty, there is'no' en'' gagement such as just described, and it is a' further important object of my invent-ion to provide means which will in effect perform the function of the front wall of the back-shuttle when the latter is absent; this means preferably being formed as a part of the guide for the back shuttle. In the present instance I retain in its'general form the plunger shown in the aforesaidapplication, but extend the clips to such a position as will enable them to engage a rear ruled surface of the falling shuttle. The guide means should be preferably movable out of the path of a' rear 'shuttle moving into the compartment, and this result is achieved by associating the guide means 'with the aforesaid plunger.

A section transverse of the shuttle near the tip thereof will ordinarily be substantially circular but toward the center of the shuttle this section becomes more and more rectangular. 'The means for restraining rotation of the shuttle The latter .shuttle is should preferably engage the shuttle where its surface is generated by a substantially straight vertical line. 1 .I. Through failure of the devices already. .described there is the possibility that a shuttle may enter the transferring shuttle box on thelaywith one of its sides down. This might happen also, if the operator should inadvertently place one of r the shuttles on its side when supplying the stack with fresh shuttles. Under these conditions it would be quite desirable, regardless ofthe cause of the improperly located shuttle, to prevent the same from being picked out of, the box. It is ac-. cordingly a further object of my invention to r provide a stop on the shuttle box or lay so located as to permit the full sweep of the picker: stick, but elfective to prevent the shuttlefrom'beingdelivered from the box. This device may be, rendered operative bythe fact thatthe front and back dimension of the shuttle is greater than its height, so that when the shuttle is improperly 10- cated-on its side the upper edge thereof projects-high enough to engage the stop.

By the devices set forth herein assurance is had that an improperly transferred shuttlewill not become active, the first of 'the'devices men-1 tioned tending to require the shuttle to move.- into position correctly, whilev the stop .on. the lay' acts to prevent delivery of the shuttle should the first devices fail in their operation;

With these and other objects in view,:which will appear as. the description proceeds, my invention residesin the combination and arrange-. ment of parts hereinafter described and set forth in the claims. In the accompanying drawing, wherein a convenient embodiment of my invention is set forth,v

Fig. 1 is a detailed transverse section taken through the lower part of the shuttle changer magazine and the upper part of the lay, showing the boxes for effecting shuttle change, a reserve shuttle being shown in the act of delivery from the compartment, x

Fig. 2 is a horizontal section on line 22 of Fig. 1,

Fig. 3 is a detailed front elevation taken in the. direction of arrow 3, Fig. 1, showing diagram-V matically the relation of the shuttle 'boxesand the picking motion, 1 Fig. 4 is a detailed section on line 4-4 of Fig. 2. Referring to the drawing, I have shown a stationary magazine M having two stacks of shuttles F and R which are respectively at the front and rear of the magazine. A delivery finger 10.

is movable about an axis I l to release the bottom stack and extends through the rear wall [1 of the magazine.

ment C under the front stack. A light spring '20 serves to return the lever normal rear position.

a vertical surface 26 on the head located ;;-to engage the rearwall of the bottom' shuttle in the rear stack.

The head H) has twoarms 2| and 22, respectively, each of which has a forwardly and down- 7 wardly' beveled surface 25, as shownmore partic 'ularly in Fig. 1. This bevel extends "down-to A lever I8 pivoted at [9 is actuated" 10 by mechanism not shown when it is desired to ada vance a shuttle from the rear stack to compart-ii and'iplunger head; to; .of theshuttlefromthe box so that the stop mo-.

gers 43 form no part of my present invention, but are substantially the same in structure and function as those shown in co-pending application Serial No. 560,573.

The matter thus far described operates normally 'to require a shuttle moving from the magazine into the top box 40 to retain its proper position so that weaving can continue after the shuttle change. properly and-should; rest on its side, weaving can- 'notJensueiand it is desirable under these condi- If the shuttle enters the box imtions to stopthejoom. v

Iy accomplish'this result by preventing delivery tion-not shown but well understood can act due to absence of weft in the shed to stop the 10cm The picking operation normally occurs beforethe'filling'fork comes into action and in I orderto prevent breakage of the picker stick it is The'two stacks are separated by a partition having a front surface 3| in line withthe front .ofthebottom shuttle of the stack'R. Thead- 25: Vance movement'of the latter shuttle when descendin'g along surface 25 results in this alignment. When so locat'ed theshuttle at the bottom of =the rear stack will engage the rear surfaceof a falling'shuttle from the front stack and O: icausethe same to move correctly to an upright position, such as indicated in dotted line in Fig. -1. So lon'g a's there is a reserve' shuttle in the cell or-stackR the falling-front shuttles will' be g uided -asdescribem but when the rear stack is 5i'k'er'npty, it isxdesirable tohaveadditional means tore'gulate the movements o'f-the front shuttles. Thisresult 'may be accomplished by theuseof a guardwhich is secured by. screws '36 to the plunger head Hi. The guardis extended on each 4ogsid'e of the h'ead and is bent as shown 'in' Fig. '2'

edges of whichas shown at .38' are'substantiall'y gverti'cal to engage'therearwall of the front shutties at points'sufiicientlyremoved'from :the shuttl'e' tips to prevent shuttlerotation;-:The bent ends 3T andguide edges 38;:as shown in Fig.- 2,

extend between the roundediends of the rear and ::fr0nt shuttles when the latter is in the .c'ompartn'Ient"C.The 'section shown in Fig. '4 illus-- trates'a convenient relation of the holder with respect to that part of a'shuttle having a straight verticalr'surfa'ce, the .edges 38 lying :against 'ithe :.rruled surface 39 of the shuttle.

As shown in 'Fig. :1, I may provide. a front plate filli'whichxdefines the front of the discharge throat or compartment C, and this plate may yieldQif .desiretLI as set forth in; my. -Serial:.No. 460,746.".

.The' guide-"35, being mounted onthe headTIB,

aforesaid. application moves forwardly-with the latter so that the ex tensions 31 move forwardly with" an advancing rearfshuttle and do not interfere with'zit. 65

' and 4|; which as set forth in the aforesaid-ap- The lay L may have top and bottom boxes .40

plication', are' raisedt durin'g'the shuttle chang.-;v

ingfoperati'on'so that the pivotedcover 42 of the top box can. be elevated sufiiciently to imake .clearpassage through the top' of the upper "box into which the'shuttle in thecompartmentC may fall.': Rearwardly extending supportingfingers-B' may besecured to the-layand support, the shuttle in i'thescompartment' C until; the topgbox arrives 7 fi'einrear positionzto receive thexshuttlep These fin-t desirable to place the shuttlearresterso that it will not-engage the shuttle until the-stick has had itsfu-ll movementunobstructed In carrying out this feature of my inventionI l place-a stop 50 as shown in' Fig. 3 on the lay sword 5l so thatthe lower curved surface thereof isat such' a distance above the race 52 asto pre-- vent delivery from the shuttle box of a shuttle which ison its'side, but permitting uninterrupted delivery of a'shuttle which isfproperly resting on its bottom; In'other wordsathe distance between-therace and the stop 50 is slightly greater than the height of :the shuttle but less'than its breadth, 'an'dis alsolocated about a shuttlelength from' the inner end of the sweep of the picker'stick;-.: The stop 50 "is not claimed herein but ismade the subject matter of my copending application-- Serial Noi '735;3I9'.

From thekfor'egoingit will be seen that I have provided-: means for preventing. an improperly V changed shuttle front-becoming. active. While the shuttle is in transit from a-frontcell to the 'box 4n imeans are provided either 'by means of ajshuttle in' the backflcelL'tor bysurfaces inde--.- pendent of the back shuttles, to engage the front m'ovingdshuttle and prevent rotation thereof 1'01'1 its'iaxislr Shouldthese' fail in their action, however, the stop 50 is provided to prevent the shut: tle from being. picked into the shed after which- Well-known: stopping mechanism Willi-act to arrest the loomsothat' the defect may be corrected by: the Weaver. Itwill 'be-seen that the means, which": engage the front shuttle are movably mounted with;the plunger head so as not to ill-.- terfere withi' forward movement of therear shuttle; butrIado; not wish-to be limited to this=constructioninasmuch as it:is sufficient for the purposesiof the ipresentinventionif the guide means 5 are located :to direct a shuttle moving 'fromthe front stack andzare moved out. of interfering positionwith respect to the advanced movement 1 V of; the rear shuttle.

The stop 50fian'd the partsrelated to it to preventa shuttle onitsside' from belngpicked into the shed are claimed in my divisional application- Serial-.No."735,319,. V e

't-Having :thus describedmy inventiorr it'will'be seen :thatchanges and modifications may be made therein-by those skilled in the art without departing. fromthe spirit and scope of. the inven- 1 tion and I do not wish to be limited to the details herein disclosed,- butwhat I claim is: V V

-1. In a shuttle changing loom; a magazine hav-- ingr-atwo groups of distinctive reserve shuttles and a common; deliverythroat, a guide-located be-. tweemthe groups. at one side of the throat to-em gage and prevent turning of a shuttle. drawn from one of the groups, and means to move said guide out of the path of the reserve shuttle drawn from the other group which is moving toward changing position.

2. In a shuttle changing'loom, a magazine having a front stack and a rear stack of reserve shuttles, means defining a shuttle receiving compartment below the front stack and in front of the rear stack into which reserve shuttles from either stack pass preparatory to shuttle change, an advancer for the shuttles of the rear stack to place them into the compartment, and a guide means on the advancer extending around the ends of a shuttle being moved by the advancer from the rear stack into the compartment, said guide means being extended forwardly toward the path of a, shuttle moving from the front stack into the compartment to engage the last named shuttle and prevent the same from turning on its axis.

3. In a multicolor shuttle changing loom, a magazine having a front stack and a rear stack of reserve shuttles, means defining a shuttle receiving compartment below the front stack and in front of the rear stack in which reserve shuttles from either stack pass preparatory to shuttle change, means defining guide surfaces in back of said compartment and in front of the rear stack to engage a shuttle drawn from the front stack and prevent the same from turning on its axis when moving into the. compartment, and mechanism to move said means out of the path of the shuttle moving from the rear stack into said compartment.

4. In a shuttle changing loom, a magazine having two stacks of reserve shuttles, a partition between the stacks, means defining a common discharge compartment adjacent both stacks, and means positioned to act upon a shuttle descending in one stack to move the same into substantial alignment with the surface of the partition adja cent the other stack, said means placing the shuttle moved thereby in position to define one side of the compartment to engage a shuttle moving into the compartment from the other stack and to prevent the last named shuttle from turning.

5. In a shuttle changing loom, a magazine having a pair of stacks of reserve shuttles, a compartment common to both stacks and located under one of them and in front of the other, the shuttles having rounded ends so that a shuttle in the compartment drawn from the stack'above the latter defines with the shuttle in the stack behind the compartment a space between the shuttles, and guide means projecting into the space to engage a shuttle drawn from the stack above the compartment as such shuttle moves into the compartment to prevent turning of said last named shuttle.

6. A shuttle advancer for a shuttle changing magazine having a common delivery compartment above which is located one stack of reserve shuttles and behind which is located a second stack of shuttles with a reserve shuttle behind the compartment, said advancer having shuttle guards shaped to conform to and extend around the ends of the shuttle behind the compartment, said advancer having means by which it can be moved to place the shuttle between the guards into the compartment.

7. A shuttle advancer for a shuttle changing magazine having a common delivery compartment above which is located one stack'of reserve shuttles and behind which is located a second stack of shuttles with a reserve shuttle behind the compartment, guards shaped to conform to and extend around the ends of the shuttle behind the compartment, and said guards having portions to guide a shuttle moving downwardly into the compartment from the stack of shuttles above said compartment to prevent such shuttle from turning.

' 8. A shuttle advancer for a shuttle changing magazine having a common delivery compartment above which is located one stack of reserve shuttles and behind which is located a second stack of shuttles with a reserve shuttle behind the compartment, said advancer having shuttle guards shaped to conform to and extending around the ends of the shuttle behind the compartment, and said advancer having a surface positioned and formed to move forwardly a shuttle which is moving toward a position between the guards and cause the front wall of such shuttle to define one side of the compartment located to guide a shuttle falling into the compartment from the first named stack and prevent such last named shuttle from turning.

RICHARD GREENLEAF TURNER.

said advancer having shuttle 

